US20160305207A1 - Downhole Tool Stop Device and Method for Use of Same - Google Patents
Downhole Tool Stop Device and Method for Use of Same Download PDFInfo
- Publication number
- US20160305207A1 US20160305207A1 US15/026,932 US201415026932A US2016305207A1 US 20160305207 A1 US20160305207 A1 US 20160305207A1 US 201415026932 A US201415026932 A US 201415026932A US 2016305207 A1 US2016305207 A1 US 2016305207A1
- Authority
- US
- United States
- Prior art keywords
- stop device
- collar
- downhole tool
- stop
- elongated body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000003825 pressing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Definitions
- the invention relates to a downhole-tool stop device.
- the invention relates more particularly to a downhole-tool stop device in a petroleum well.
- the stop device includes a first collar and a second collar attached to a pipe string.
- the second collar is provided with shear pins so that the second collar may be released on impact with a casing during operations in which a downhole tool is to be released.
- a pipe string provided with a tool which is carried into a pipe, for example a casing, is used.
- the tool included in the pipe string is activated a distance inside the casing.
- a stop device on the pipe string.
- the stop device usually consists of a collar with a diameter larger than the bore of the casing.
- the tool may be brought to the desired position relative to the end of the casing by the collar meeting the end of the casing and preventing the tool from travelling further into this.
- grippers that grip internally in the casing.
- Such grippers are often formed with a serrated or toothed surface, which is arranged to engage with the pipe wall.
- the grippers may be formed from radially mounted segments with an internal wedge shape, so that the axial movement of a conical pressing element within the grippers may force the grippers out against the casing.
- the axial movement of the conical pressing element can be activated by rotating the pipe string of which the tool forms part. Solutions are also known in which the axial movement of the conical pressing element is activated by pulling in the direction out of the casing by means of an actuator, or by stretching the pipe string.
- the grippers are typically activated by the conical element being moved in the direction out of the well. By pulling on the pipe string from the surface, the gripping force may be increased by increasing the pull. The grippers may be difficult to get loose when an operation is finished or if the operation has to be interrupted.
- the conical pressing element must be moved in the inward direction in the well in order to release the grippers from the casing. Conical pressing elements that are activated by rotation of the pipe string may be difficult to get loose by rotation in the opposite direction and there may be a risk of such rotation loosening or overtightening threaded connections in the pipe string or in the tool without the grippers coming loose.
- the stop resting against the end of the pipe may make it impossible to use weight from the pipe string to force the conical element inwards in the pipe so that the grippers come loose.
- the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art.
- the invention in a first aspect, relates to a downhole-tool stop device, the stop device including a first collar attached to an elongated body, and the stop device including a second collar attached to the elongated body, and the second collar being displaceably attached to the elongated body, and the first collar and the second collar being placed a distance apart.
- the second collar may be displaceably attached to the elongated body by at least one rupture body.
- the second collar may be attached closer to the second end portion of the elongated body than the first collar.
- the elongated boy may consist of a pipe string.
- the pipe string may consist of a two-part pipe string, and the upper section and the lower section of the pipe string may be threadedly connected.
- the lower section of the pipe string may be provided with an edge portion arranged to hit the second collar.
- the first collar may have a larger external diameter than the second collar.
- the at least one rupture body may be taken from the group consisting of shear screws and shear pins, and the at least one rupture body may be arranged substantially perpendicularly to the longitudinal direction of the elongated body.
- the downhole tool may consist of a gripping tool or a hang-off tool, and the downhole tool may be attached to the second end portion of the elongated body.
- the elongated body may be taken from the group consisting of pipes, cylinders, square-head bolts, hexagon bolts, octagon bolts, triangle-head bolts, spline bolts and wires.
- the invention relates to a method of using a downhole-tool stop device in an underground well, the method comprising the steps of:
- FIG. 1 shows a partial section of a stop device according to the invention
- FIG. 2 shows a section of FIG. 1 on a larger scale
- FIGS. 3A-B show a partial section of the stop device and a section of a casing.
- Positional specifications such as “over”, “under”, “above”, “below”, “right” and “left” refer to the positions that are shown in the figures.
- the reference numeral 1 indicates a stop device for a downhole tool according to the invention.
- the stop device 1 as shown in FIG. 1 includes a first stop collar 4 and a second stop collar 6 placed a distance A 1 apart.
- the stop collars 4 , 6 are fixed around a pipe string 9 , the pipe string 9 having a first end portion 11 and a second end portion 19 .
- the pipe string 9 is shown as a two-part pipe string comprising an upper pipe-string section 2 and a lower pipe-string section 7 .
- the pipe string sections 2 , 7 are connected by complementary threaded connections of a type known per se.
- a pipe string 9 is shown, but the stop device 1 may be attached to other elongated bodies, for example a cylinder, a bolt or other bodies fulfilling the purpose of the present invention.
- the first stop collar 4 is permanently attached to the pipe string 9 by means of set screws 3 and a threaded portion 15 .
- the second stop collar 6 is attached to the pipe string by means of shear pins 5 .
- the first stop collar 4 has an external diameter D 1 somewhat larger than the external diameter D 2 of the second stop collar 6 , see FIG. 2 . It is thereby achieved that the second stop collar 6 does not come into contact with the well wall when the stop device 1 is carried into and out of a well. It is desirable for the second stop collar not to come into contact with the well wall when being carried into and out of a well because this may involve the risk of the shear pins 5 weakening or breaking.
- the external diameters D 1 , D 2 of the stop collars 4 , 6 are adapted in such a way that the stop collars may hit a casing 8 when being run into a well, see FIG. 3 . However, it will be understood that the external diameters D 1 , D 2 of the stop collars 4 , 6 may be equal.
- the downhole tool When a downhole tool (not shown) is being run into a well, the downhole tool may be attached to the second end portion 19 of the pipe string 9 .
- the downhole tool may be a pulling tool with grippers, for example.
- the pulling tool When the pulling tool is being run into the well, the running-in distance is restricted by the second stop collar 6 of the stop device 1 hitting the casing 8 , see FIG. 3A .
- the pulling tool is locked by the pipe string 9 being pulled in the direction out of the well.
- the pipe string 9 When the pulling tool is being disengaged, the pipe string 9 is first pulled a distance in the direction out of the well, then the pipe string 9 is dropped back down in the well so that a sufficiently great force is achieved to break the shear pins 5 when the second stop collar 6 hits the casing 8 , see FIG. 3B . Further movement into the casing 8 is prevented by the second stop collar 6 further hitting the first stop collar 4 .
- the number of shear pins 5 , the dimension of the shear pins 5 and the material from which they are made are selected in a known manner on the basis of the axial force to be required in order to break the shear pins 5 .
- the shear pins 5 may be made in a known manner as screws 5 .
- the second collar 6 may be displaceably attached to the pipe string 9 with other types of attachments that disengage or break at a given force.
- Such attachments may consist of threads, recesses and complementary grooves, for example.
- the second collar 6 may consist of a material that will make the collar 6 itself break at a given force. Examples of such materials are aluminium, brass, other metals, polymer materials and composite materials.
- the second stop collar 6 is prevented from falling off the pipe string 9 by the pipe string 9 being provided with an edge 10 that will hit the second stop collar 6 as the stop collar 6 moves downwards.
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
- The invention relates to a downhole-tool stop device. The invention relates more particularly to a downhole-tool stop device in a petroleum well. The stop device includes a first collar and a second collar attached to a pipe string. The second collar is provided with shear pins so that the second collar may be released on impact with a casing during operations in which a downhole tool is to be released.
- In some downhole operations, a pipe string provided with a tool, which is carried into a pipe, for example a casing, is used. The tool included in the pipe string is activated a distance inside the casing. To ensure that the tool is not carried too far into the casing, it is known to arrange a stop device on the pipe string.
- The stop device usually consists of a collar with a diameter larger than the bore of the casing. Thus, the tool may be brought to the desired position relative to the end of the casing by the collar meeting the end of the casing and preventing the tool from travelling further into this.
- In some downhole tools it is relevant to activate grippers that grip internally in the casing. Such grippers are often formed with a serrated or toothed surface, which is arranged to engage with the pipe wall. The grippers may be formed from radially mounted segments with an internal wedge shape, so that the axial movement of a conical pressing element within the grippers may force the grippers out against the casing.
- The axial movement of the conical pressing element can be activated by rotating the pipe string of which the tool forms part. Solutions are also known in which the axial movement of the conical pressing element is activated by pulling in the direction out of the casing by means of an actuator, or by stretching the pipe string.
- The grippers are typically activated by the conical element being moved in the direction out of the well. By pulling on the pipe string from the surface, the gripping force may be increased by increasing the pull. The grippers may be difficult to get loose when an operation is finished or if the operation has to be interrupted. The conical pressing element must be moved in the inward direction in the well in order to release the grippers from the casing. Conical pressing elements that are activated by rotation of the pipe string may be difficult to get loose by rotation in the opposite direction and there may be a risk of such rotation loosening or overtightening threaded connections in the pipe string or in the tool without the grippers coming loose. The stop resting against the end of the pipe may make it impossible to use weight from the pipe string to force the conical element inwards in the pipe so that the grippers come loose.
- A need therefore exists for a stop device that, in relation to known stop devices, allows a further travelling in the axial direction when a downhole tool is being released.
- The invention has for its object to remedy or reduce at least one of the drawbacks of the prior art.
- The object is achieved according to the invention through the features that are specified in the description below and in the claims that follow.
- In a first aspect, the invention relates to a downhole-tool stop device, the stop device including a first collar attached to an elongated body, and the stop device including a second collar attached to the elongated body, and the second collar being displaceably attached to the elongated body, and the first collar and the second collar being placed a distance apart.
- The second collar may be displaceably attached to the elongated body by at least one rupture body.
- The second collar may be attached closer to the second end portion of the elongated body than the first collar. The elongated boy may consist of a pipe string.
- The pipe string may consist of a two-part pipe string, and the upper section and the lower section of the pipe string may be threadedly connected.
- The lower section of the pipe string may be provided with an edge portion arranged to hit the second collar.
- The first collar may have a larger external diameter than the second collar.
- The at least one rupture body may be taken from the group consisting of shear screws and shear pins, and the at least one rupture body may be arranged substantially perpendicularly to the longitudinal direction of the elongated body.
- The downhole tool may consist of a gripping tool or a hang-off tool, and the downhole tool may be attached to the second end portion of the elongated body.
- The elongated body may be taken from the group consisting of pipes, cylinders, square-head bolts, hexagon bolts, octagon bolts, triangle-head bolts, spline bolts and wires.
- In a second aspect, the invention relates to a method of using a downhole-tool stop device in an underground well, the method comprising the steps of:
-
- attaching a downhole tool to a stop device, the stop device including an elongated body, a first stop collar and a second stop collar;
- running the downhole tool attached to the stop device in until the second stop collar of the stop device hits a casing;
- engaging the downhole tool with the casing by moving the downhole tool and the stop device in the direction out of the underground well;
- releasing the engagement of the downhole tool with the casing by moving the downhole tool and the stop device in the direction into the underground well so that the shear pins of the second stop collar break.
- In what follows, an example of a preferred method and embodiment is described, which is visualized in the accompanying drawings, in which:
-
FIG. 1 shows a partial section of a stop device according to the invention; -
FIG. 2 shows a section ofFIG. 1 on a larger scale; and -
FIGS. 3A-B show a partial section of the stop device and a section of a casing. - In the description of the drawings, references to some details have been left out. These details are not essential to emphasize the novelty of the invention. These details may be of importance for the production of the apparatus, but references to them have been left out to simplify the description and clarify the invention.
- Equal or corresponding elements will be indicated by the same reference numerals in the figures.
- Positional specifications such as “over”, “under”, “above”, “below”, “right” and “left” refer to the positions that are shown in the figures.
- In what follows, the
reference numeral 1 indicates a stop device for a downhole tool according to the invention. - The
stop device 1 as shown inFIG. 1 includes afirst stop collar 4 and asecond stop collar 6 placed a distance A1 apart. In the embodiment shown, thestop collars pipe string 9, thepipe string 9 having afirst end portion 11 and asecond end portion 19. Thepipe string 9 is shown as a two-part pipe string comprising an upper pipe-string section 2 and a lower pipe-string section 7. Thepipe string sections pipe string 9 is shown, but thestop device 1 may be attached to other elongated bodies, for example a cylinder, a bolt or other bodies fulfilling the purpose of the present invention. - The
first stop collar 4 is permanently attached to thepipe string 9 by means ofset screws 3 and a threadedportion 15. Thesecond stop collar 6 is attached to the pipe string by means of shear pins 5. - The
first stop collar 4 has an external diameter D1 somewhat larger than the external diameter D2 of thesecond stop collar 6, seeFIG. 2 . It is thereby achieved that thesecond stop collar 6 does not come into contact with the well wall when thestop device 1 is carried into and out of a well. It is desirable for the second stop collar not to come into contact with the well wall when being carried into and out of a well because this may involve the risk of the shear pins 5 weakening or breaking. The external diameters D1, D2 of thestop collars casing 8 when being run into a well, seeFIG. 3 . However, it will be understood that the external diameters D1, D2 of thestop collars - When a downhole tool (not shown) is being run into a well, the downhole tool may be attached to the
second end portion 19 of thepipe string 9. The downhole tool may be a pulling tool with grippers, for example. When the pulling tool is being run into the well, the running-in distance is restricted by thesecond stop collar 6 of thestop device 1 hitting thecasing 8, seeFIG. 3A . The pulling tool is locked by thepipe string 9 being pulled in the direction out of the well. - When the pulling tool is being disengaged, the
pipe string 9 is first pulled a distance in the direction out of the well, then thepipe string 9 is dropped back down in the well so that a sufficiently great force is achieved to break the shear pins 5 when thesecond stop collar 6 hits thecasing 8, seeFIG. 3B . Further movement into thecasing 8 is prevented by thesecond stop collar 6 further hitting thefirst stop collar 4. - The number of
shear pins 5, the dimension of the shear pins 5 and the material from which they are made are selected in a known manner on the basis of the axial force to be required in order to break the shear pins 5. The shear pins 5 may be made in a known manner as screws 5. - In an alternative embodiment (not shown), the
second collar 6 may be displaceably attached to thepipe string 9 with other types of attachments that disengage or break at a given force. Such attachments may consist of threads, recesses and complementary grooves, for example. In a further alternative embodiment, thesecond collar 6 may consist of a material that will make thecollar 6 itself break at a given force. Examples of such materials are aluminium, brass, other metals, polymer materials and composite materials. - When the released pulling tool is being pulled out of the well, the
second stop collar 6 is prevented from falling off thepipe string 9 by thepipe string 9 being provided with anedge 10 that will hit thesecond stop collar 6 as thestop collar 6 moves downwards.
Claims (14)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20131324 | 2013-10-02 | ||
NO20131324A NO340863B1 (en) | 2013-10-02 | 2013-10-02 | Stop device by downhole tool and method of using the same |
PCT/NO2014/050180 WO2015050458A1 (en) | 2013-10-02 | 2014-09-30 | Downhole tool stop device and method for use of same |
Publications (2)
Publication Number | Publication Date |
---|---|
US20160305207A1 true US20160305207A1 (en) | 2016-10-20 |
US10030457B2 US10030457B2 (en) | 2018-07-24 |
Family
ID=52778958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/026,932 Active US10030457B2 (en) | 2013-10-02 | 2014-09-30 | Downhole tool stop device and method for use of same |
Country Status (7)
Country | Link |
---|---|
US (1) | US10030457B2 (en) |
EP (1) | EP3052743B1 (en) |
AU (1) | AU2014330125B2 (en) |
BR (1) | BR112016007266A8 (en) |
DK (1) | DK3052743T3 (en) |
NO (1) | NO340863B1 (en) |
WO (1) | WO2015050458A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2562089B (en) * | 2017-05-04 | 2019-07-24 | Ardyne Holdings Ltd | Improvements in or relating to well abandonment and slot recovery |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4591197A (en) * | 1983-09-27 | 1986-05-27 | Ava International Corp. | Wire line running and/or pulling tool |
US20110042081A1 (en) * | 2009-08-24 | 2011-02-24 | Halliburton Energy Services, Inc. | Methods and Apparatuses for Releasing a Chemical into a Well Bore Upon Command |
US20110155395A1 (en) * | 2009-12-30 | 2011-06-30 | Schlumberger Technology Corporation | Method and apparatus for releasing a packer |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2824613A (en) * | 1952-03-24 | 1958-02-25 | Baker Oil Tools Inc | Stop devices for well conduits |
US2962313A (en) | 1957-05-27 | 1960-11-29 | Baker Oil Tools Inc | Stop ring for well conduit |
US3610336A (en) * | 1970-04-23 | 1971-10-05 | Otis Eng Co | Landing nipple with locator and orienting means |
US3837398A (en) * | 1973-07-30 | 1974-09-24 | Otis Eng Corp | Kickover tool |
US3863715A (en) | 1973-10-10 | 1975-02-04 | Otis Eng Co | Landing and running tool assembly |
US3997003A (en) | 1975-06-09 | 1976-12-14 | Otis Engineering Corporation | Time delay nipple locator and/or decelerator for pump down well tool string operations |
US4311194A (en) * | 1979-08-20 | 1982-01-19 | Otis Engineering Corporation | Liner hanger and running and setting tool |
US4391326A (en) | 1981-01-22 | 1983-07-05 | Dresser Industries, Inc. | Stinger assembly for oil well tool |
US4681159A (en) | 1985-12-18 | 1987-07-21 | Mwl Tool Company | Setting tool for a well tool |
US5735345A (en) | 1996-05-02 | 1998-04-07 | Bestline Liner Systems, Inc. | Shear-out landing adapter |
US9303477B2 (en) * | 2009-04-02 | 2016-04-05 | Michael J. Harris | Methods and apparatus for cementing wells |
US8453729B2 (en) * | 2009-04-02 | 2013-06-04 | Key Energy Services, Llc | Hydraulic setting assembly |
US8684096B2 (en) | 2009-04-02 | 2014-04-01 | Key Energy Services, Llc | Anchor assembly and method of installing anchors |
-
2013
- 2013-10-02 NO NO20131324A patent/NO340863B1/en unknown
-
2014
- 2014-09-30 BR BR112016007266A patent/BR112016007266A8/en not_active Application Discontinuation
- 2014-09-30 DK DK14850507.6T patent/DK3052743T3/en active
- 2014-09-30 AU AU2014330125A patent/AU2014330125B2/en not_active Ceased
- 2014-09-30 EP EP14850507.6A patent/EP3052743B1/en active Active
- 2014-09-30 US US15/026,932 patent/US10030457B2/en active Active
- 2014-09-30 WO PCT/NO2014/050180 patent/WO2015050458A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4591197A (en) * | 1983-09-27 | 1986-05-27 | Ava International Corp. | Wire line running and/or pulling tool |
US20110042081A1 (en) * | 2009-08-24 | 2011-02-24 | Halliburton Energy Services, Inc. | Methods and Apparatuses for Releasing a Chemical into a Well Bore Upon Command |
US20110155395A1 (en) * | 2009-12-30 | 2011-06-30 | Schlumberger Technology Corporation | Method and apparatus for releasing a packer |
Also Published As
Publication number | Publication date |
---|---|
NO340863B1 (en) | 2017-07-03 |
NO20131324A1 (en) | 2015-04-03 |
US10030457B2 (en) | 2018-07-24 |
WO2015050458A1 (en) | 2015-04-09 |
DK3052743T3 (en) | 2019-07-22 |
BR112016007266A2 (en) | 2017-08-01 |
WO2015050458A8 (en) | 2015-05-14 |
EP3052743A1 (en) | 2016-08-10 |
EP3052743A4 (en) | 2017-07-05 |
EP3052743B1 (en) | 2019-06-12 |
BR112016007266A8 (en) | 2017-10-10 |
AU2014330125B2 (en) | 2018-04-12 |
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